Research Abstracts

Separation of heavy metals by NF membrane has been enhanced by adding surfactants on the feed solution. The enhancement of heavy metal by surfactant addition depends on the pH of the chrome solution. Acidic pH found more separation enhancement of hexavalent chromium. Chrome plating industrial efflue

Analyzing the permeate fluxes together with the values of “A” it can be observed that the better final flux results (60% higher than the lowest flux) occurred in the experiments with high pressures, in spite the flux curve had more accentuated decline. When high velocity and high pressure are used,

The addition of a coagulant salt in the UF treatment of an o/w emulsion modifies in a great extent the physicochemical properties of the oil droplets and, therefore, the electrostatic interactions among them. As a result, phenomena such as coalescence, gel layer formation, permeate flux reduction, m

The designed membrane facilities are effective in the pathogenic microorganism removal from surface water and allow to obtain safe drinkable water in rural areas of Ecuador. Natural coagulants from oil seeds show promising results in coagulation and antimicrobial test. Agro-based materials can be an

In conclusion, the viability of a MEUF process for the removal of tannic acid from aqueous effluents has been demonstrated in a pilot scale plant. A clear increase in the tannic acid retention coefficient was reached when SDS was added in a concentration higher than its CMC.

Microfiltration membrane is increasingly used in wastewater treatment to produce a higer quality effluent. In this study a microfiltration membrane from Tunisian clay (JM18/SI2) was used to treat cuttlefish effluents generated from the conditioning (freezing and washing) seawater food industry which

3. Results and discussion All base polymers were obtained after precipitation as white to beige powders in quantitative yields and with high molecular weights (hinh. > 0.5 dl/g). Membranes with a theoretical ionexchange capacity (IEC) ranging from 0 to 2.08 mmol/g (PES) or from 0 to 2.25 mmol/g (PPE

The objective of the study was to develop a routine method for the characterization of virus retentive membranes. The dextran method was found to be well suited after intensive investigations and adjustments of the filtration parameters. Clear reproducible correlations of the sieving curves of diffe